Combined tire-valve and pressure-indicator



I. MANY.

COMBINED TIRE 'VALVE AND PRESS-URE INDICATOR.

APPLICATION FILED JULY 26, I920.

Patented May 10, 1921.

AJH r m n N UNITED STATES PATENT QFFltE.

TULIUS MANY, OF. NEW YORK, N. Y.

COMBINED TIRE-VALVE AND PRESSURE-INDICATOR.

Application filed July 26,

T 0 all whom t may concern.'

Be it known that I, JULiUs MANY, a citizen of France, residing at 163 E. 92nd St., New York, in the county of New York and State of New York, have invented certain new and useful improvements in a Combined Tire-Valve and Pressure-Indicator, of which the following is a specification.

My invention relates to a combined tire valve and pressure indicator.

One of the objects of my invention is to provide an indicator for the pressure in the inner tube of apneuinatic tire which shall flange 2,

not be entirely dependent upon the action of a coil spring. t

Another object of my invention is to provide such an indicator in which the resilient element shall be protected from dust, oil and the like.

Other objects of my invention will be set forth in the following description and drawings which illustrate a preferred embodinient thereof.

Figure 1 is an elevation partially in section.

Fig. 2 is a vertical central section.

Fig. 3 is an enlarged vertical central section of parts of the device.

Fig. 4 is a section along the line 4-4 of Fig. 3. Y

Fig. 5 is a section along the line 5-5 of Fig. 3.

Fig. 6 is a section along the line 6-G of Fig. 3. All the sectional views are taken inthe' direction of the arrows ad]acent their respective lines.

The combined valve and indicator has a base portion 4 which is externally threaded and which is provided with a flange 2 at the lower end thereof.

As can be seen in Fig. 1 in particular, the cross section of the base portion 4 is not circular, but parts of the original circular body thereof have been cut off so as to form two opposite and parallel plane faces, one of which is shown in Fig. 1, the other plane face being opposite thereto. These faces have no threading.

The slide 3 which has the shape of the base 4 except that it is made wide enough so as to be able to slip over its threading is mounted above the flange 2.

As shown in Figs. 1 and 2, the inner tube can be held between the slide 3 and the and by screwing down the nuts 21 and 30 which coperate with theeXterior Specification of Letters Patent.

Fatented May 13, 1221.

1920. Serial No. 398,966.

threading of the base 4, the inner tube, 1 can be firmly clamped in position.

A cap 5 having a hexagonal head 6 can be screwed down upon the base 4s9 as to cover the working parts of the device, which will be further described. rlhe base 4 which is provided with a bore 7 is extended so as to form a neck 23 which is provided with a scale as shown in Fig. 3, so as to indicate the pressure within the inner tube in pounds per square inch or in any other desired unit.

A slide tube 8 which is externally threaded at its upper end as shown in Fig. 3, is mounted upon the neck 23 and is adapted to slide up and down thereon.

A coil spring 9 is mounted within the slide tube 3 as shown in Figs. 2 and 3, its bottom resting against the bottom of the slide tube 8, and its upper end bearing against the cylindrical liange 10 of the resilient hook member 12, which as seen in Fig. 3 is provided with an externally threaded projection 24 having a bore 22, the said projection 24 being fastened to the neck 23 by means of suitable coperating threading.

The tendency of the weak coil spring `9 is therefore to force the bottom of the slide tube 3 to the bottom of the scale provided upon the exterior of the neck 23.

Above the flange 10, the hook nieinber 12 is split so as to provide four resilient hooklike members as shown in Fig. 5 whose outwardly turned ends press against the bushing 11 whose exterior surface is cylindrical so as to fit snugly against the inner surface of the slide tube 8 and whose inner surface has a conical shape, the narrowest portion of the inner surface of the bushing llbeing at the bottom or the base portion therecf. By base portion is meant that part which is nearest the inner tube when Nthe device is in use.

As seen in Fig. 3, the bushing 11 may be provided with aii upward flange at the upper part thereof, which may lit over the top of the slide tube 8.

A washer holder 14 having an internal bore 15 is mounted within the hook member 12 so as to be firmly held in position and to lit tightly. The bottom of the washer holderv 14 fits snugly against the adjacent part of the hook member 12.

The washer holder has a seat 16 for the resilient washer 17 which has a dish shape and is provided with holes 22.

A ball valve 18 is pressed by the resilient washer 17 against the bore 19 of the pump member 2O whose threaded head 25 is se cured over the slide tube 8 by suitable co operating threading as shown in F ig. 3.

rhe action of my device is as follows:

l/Vhen the parts are assembled in the positions before describet, the nozzle of the air pump can be secured to the pump member 2O and air can be forced in in the usual way. The pressure of the incoming air slightly displaces the ball valve 8 and the air passes through the bores of the various membersbefore described into the inner tube.

es soon as the pressure from the air pump is removed, the resilient washer 17 forces the valve 8 into its closed position, and the pressure of the air within the inner tube tends to seat the valve 8 more tightly and to close the bore i9 more tightly so as to prevent the escape of the air.

The pressure of the air within the inner tube against the ball valve 8 tends to force the pump member 2O together with the slide tube 8 to which it is secured away from the base 4L.

This tendency is resisted to a very slight degree by the coil spring 9, the substantial resistance being offered by the four hooks or el ws of the split member 12 which are forced together by the movement of the bushing 1l, which is carried along by the slide tube 8.

The substitution of the split claw member l2 which presses against the conical inner surface of the bushing ll, provides a resilient means to oppose the pressure of the air within the inner `tube which is not dependent upon temperature, atmospheric conditions and the like.

ln addition, the resilient means is perfectly inclosed against oil, dirt and the like.

The slide tube S is forced upwardly or away from the base to an extent depending upon the pressure Within the inner tube, and the distance to which the bottom ofthe slide tube rises, with respect to the scale upon the neck 23 indicates thev pressure Within the inner tube.

The device thus serves as a combined. valve and pressure gage.

1 have described a preferred embodiment of my invention, but it is clear that numerous changes and omissions could be made without departing from its spirit.

lf desired, washers or any suitable packing members of known type can be used between the various metal members before described, to prevent leakage. This feature is not disclosed in the drawings, because in itself it is old and well-known.

1 prefer to have a minute perforation in the neck 23 above the scale, so that if the pressure rises above the safety point for any reason, so that the bottom of slide tube contact therewith at all times.

8 rises above the scale, the air can escape. lThis perforation is not shown in the drawings, as the scale thereof is too small.

The bushing l1 could be made just long enough to permit the claw member l2 to The washer holder 14- could be connected to bushing 1l by any suitable holding means, to further keep it steady during the operation of the device.

1 claim l. In combination, a base portion, means for securing it to the inner tube of a tire, a scale connected to said base portion, a slidable member mounted to slide to and fro on said base portion, a resilient member having resiliency in a direction transverse to the movement of said slidable member, means for securing it to said base portion, and means intermediate said slidable member and said resilient member whereby the movement of the slidable member affects'the transverse contour of said resilient member, and connections intermediate said slidable member and said inner tube whereby the pressure of the air in said inner tube tends to actuate said slidable member. l

2. In combination, a base portion, means for securing it to the inner tube of a tire, a scale connected to said base portion, a resilient member having resiliency in a direction transverse to the axis of said base portion, an indicating member mounted on said base portion adjacent said scale and adapted to cooperate therewith, and connecting means intermediate said resilient member and said indicating means whereby the movement of said indicator aieets the transverse contour of said resilient member and connections intermediate said indicating member and said inner tube whereby the pressure of the air in said inner tube tends to actuate said' indicating member.

3. ln combination, a hollow base-portion means for securing it to an inner tube of a tire, said base portion having a scale secured thereto, a slidable tube fitting over said scale and adapted to move with respect to said scale, a resilient member secured to said base portion above said scale and adapted to resist the movement of said slide member away from the base of said base portion, and a check valve located above said resilient member and connected to said slide member so that the air pressure in saidinner tube tends to move said slideV member away from said inner tube.

4l. ln combination, a hollow base portion having a relatively narrow neck provided with a scale on the exterior thereof, a slide tube mounted on the exterior of said neck and adapted to be moved up and down on said scale, an interior bushing connected to said slide tube and having an inner conical surface with its smallest cross-section diameter adjacent said scale, a split resilient member secured to said neck and extending within said bushing and having resilient arms bearing against the interior surface thereof, and a check valve located above said bushing and secured to said slide tube, so that the pressure of the air in said inner tube tends to force said slide tube along said scale and to force the resilient arms together.

5. In combination, a hollow base portion having a relatively narrow neck provided with a scale on the exterior thereof, a slide tube mounted on the exterior of said neck and adapted to slide up and down on said scale, a bushing fitting over the top of said slide-tube and located above said scale said bushing having an interior conical surface which tapers toward said scale, a split resilient member secured to the top of said neck and having resilient arms which bear against the interior surface of said bushing, a valve support extending above said bushing and carrying a resilient dished washer provided with perforations, a valve carried by said washer and pressed by said washer against the end of the bore of a pump-connection member which is secured to the top of said inner tube, whereby the pressure of the air in said inner tube tends to force said slide tube along said scale.

In testimony whereof I hereunto yaiiX my signature.

J ULIUS MANY. 

